Yarn cleaner



1950 H. GRIEMSMANN 2,526,864

YARN CLEANER Filed Feb. '7, 1949 IN V EN TOR.

gym/ 5%wmsma/m M A ATTORNEY Patentedoct. 24, 1950' I YARN CLEANER Henry E. Griemsmann, Elmira Heights, N. Y., assignor to Bendix Aviation Corporation, a corporation of Delaware Application February-7, 1949, SeriaLNo. 74,881

Claims.

The present invention relates to a yarn cleaner and more particularly to a device for removing adherent particles of foreign matter from a textile yarn or filament during a winding or reeling operation.

This invention is an improvement over the structure shown in the patent to Hasbrouck 1,773,486, issued August 19, 1930. In that patent there are disclosed two sets of movable blades or scrapers between which the yarn is conducted, the blades being pressed together with such a light pressure that the passage of the yarn between them causes them to vibrate.

. It has been found that the efliciency of the cleaner is increased if one set of blades is caused to continuously oscillate or rock slightly with respect to the other so as to move the blades laterally with respect to the direction of travel of the yarn.

The present invention comprises an arrangement for automatically oscillating one set of cleaner blades of the type illustrated in said patent with respect to the other set of blades.

It is an object of the present invention to provide a novel yarn cleaner which is effective in operat-on, simple in construction, and economical to manufacture.

It is another object to provide such a device in which the yarn to be cleaned is caused to pass between relatively movable sets of blades. or scrapers which remove the foreign material as the yarn passes through the cleaner.

It is another object to provide such a device in which the lateral movement of the yarn caused by the winding mechan sm in leveling the yarn package is used to continuously oscillate one set of blades to assist in dislodging the foreign material and conducting it away from the yarn.

Further objects and advantages will be apparent from the following description taken in connection with the accompanying drawing in which:

Fig. l is a perspective view of a portion of a winding machine in conjunction with a preferred form of the present invention; I

Fig. 2 is an enlarged end view of the yarn cleaner; and

Fig. 3 is an en arged sectional detail taken substantially on the line 3-3 of Fig. 1.

In Fig. 1 of the drawing there is illustrated a yarn package i rotatably supported in any suitable manner as indicated at 2, and arranged to be rotated by a power driven cylinder 3 which frictionally engages the yarn package and is provided with helical grooves 4 adapted to receive a yarn 5 and cause the yarn to traverse the surface of the yarn package as it is wound thereon. This structure is substantially similar to that disclosed in the patent to Reece 1,749,355, issued March 4, 1930, and constitutes no part of the present invention.

Means for cleaning the yarn 5 as it is being wound on the package I is provided comprising a chassis member 6 adapted to be mounted on the tension support bracket of the winding machine in any suitable manner in position to operate on the yarn 5 before it engages the traversing cylinder 3.

A scraper bar I is rigidly fixed to the chassis 6, and is provided with a plurality of scraper blades 8 extending laterally therefrom and inclined so as to deflect downwardly the particles of foreign matter removed thereby from the yarn. Asecond scraper bar 9 is movably mounted on the chassis 6 by means of posts ll, l2 and I3 fixed to the chassis, on which the bar 9 is slidably and oscillatably mounted as shown more clearly in Fig. 3.

As there shown, the bar 9 is provided with openings l 4 for loosely receiving said pins, said openings being countersunk as shown at 15 so as to allow the bar to oscillate slightly on the mounting pins. A lock ring I6 is seated in a groove on the ends of the pins II and Hi to prevent the bar 9 from coming off said pins.

The bar 9 is provided with a plurality of scraper blades I 1 similar to the blades 8 of the fixed bar I and normally in close juxtaposition therewith. Yielding means for urging the movable bar 9 toward the fixed bar I is provided in the form of a light compression spring l8 retained on the pin l2 by means of lock nuts l9. Means for adjusting the clearance between the blades 8 and I! so as to permit the yarn to pass therebetween is provided in the form of conically pointed screws 2| and 22 mounted in brackets 23 and 24 fixed to the movable bar 9, said screws being so positioned by the brackets as to engage the ends of the pins II and [3 respectively.

The blades 8 and I! are provided with mating notches 25 and 26 which notches are positioned in a plane slightly above the pins II, [2 and I3 so that these pins serve as guides for the yarn 5 as it traverses the notches in the scraper blades.

The chassis 6 is provided with a thread guide 21 for receiving the yarn as it comes from the bobbin or other supplying device. It is also provided with a tension device 28 which cooperates with the guide 21 to conduct the yarn into the space between the sets of scraper blades.

assasss A slub catcher indicated generally by numeral 20 is preferably mounted on the chassis I beyond the scraper blades, in position so that the yarn I traverses the slub catcher as it emerges from the cleaner and proceeds to the traversing cylinder I of the winder.

In order to facilitate threading up the cleaner, a curved bar or rod Ii is mounted in the chassis ,I extending from the vicinity of the guide 21 beyond the slub catcher 2! and so positioned that if the yarn is dropped on the cleaner it will be automatically conducted to its proper position under the tension device 28 and between the cleaner blades I, I! and through the slub catcher 29.

In order to utilise the lateral movement of the yarn I which is imparted to it by the traversing mechanism as a means for oscillating the scraper bar I, a lever member I! is pivoted to the chassis as indicated at 33 and is provided on one end with a notch 34 in position to receive the yarn,

I after it emerges from the slub catcher 2!. Preferably this end of the lever is provided with lateral extensions II and II which are arranged agbestshowninl'lg.zsoastoguidetheyarn into notch 34.

An arm 31 rigidly fixed to the scraper bar I- as indicated at II has a loop or eye II formed on its free end adapted to loosely receive the free end ll of lever 32. Pivotal movement of lever 32 caused by the lateral pressure of the yarn I against the sides of the notch 34 as the yarn is traversed during the winding process is thus caused to swing the lever 31 and thereby oscillate the scraper bar 9 so as to move the edges of the scraper blades l'l slightly in a vertical direction with respect to the fixed scraper blades 8.

In operation, after the winding machine is threaded up, it is merely necessary to drop the yarn I on the cleaner whereupon the guide has Ii and guide 21 cause the yarn to position itself under the tension device 28 and between the edges and is mounted with freedom for oscillation so as to move said edges transverse to the direction of travel of the yarn, means for yieldably urging said one of said members against the yarn, and means responsive to lateral movement of the yarn for maintaining the said one member in a state of continuous oscillation.

2. In a yarn cleaner for removing foreign material from a traveling yarn opposed separable members at opposite sides of the yarn at least one of which is provided with transverse scraping edges and is mounted with freedom for oscillation so as to move said edges transverse to the direction of travel of the yarn; means for yieldably urging said one of said members against the yarn; means for adjusting the minimum clearance between said members without interfering with the freedom for oscillation of said one member; and means responsive to lateral movement of the yarn after it has passed through the cleaner for maintaining said one member in a state of continuous oscillation.

3. In a yarn winding machine of the type in which yarn is drawn from a bobbin or the like onto a packaging device, such as a cone or cylinder, and comprising means for leveling the yarn on the receiving device by continuously traversing the yarn across the face of the package, the combination of a yarn cleaner including opposed separable members at opposite sides of the yarn as it travels through the cleaner, said members having a plurality of scraping edges for engaging the yarn at opposite points; means for yieldably urging said members together, a pivotally mounted member arranged to engage the yarn after it leaves the cleaner so as to be vibrated by the scraper blades 8. l1, traverse the slub catcher 2| and enter the notch ll of the oscillating lever 32. Thereafter during the winding operatiton the scraper blades engage the sides of the yarn with a slight pressure as determined by the spring II, while the blades II are continuously oscillated laterally by the levers i1 and 31 so as to effectively dislodge all foreign material from the yarn and deflect it downwardly away from the yarn.

Although but one form of the invention has been shown and described in detail, it will be understood that other embodiments are possible and that changes may be made in the design and arrangement of the parts without departing from the spirit of the invention.

I claim:

1. Ina yarn cleaner for removing foreign material from a traveling yarn, opposed separable members at opposite sides of the yarn, at least one of which is provided with transverse scraping yarn as it is traversed; and means for oscillating one of said scraping members with respect to the other, responsive to the vibration of said pivoted member.

4. A yarn cleaner as set forth in claim 3 including further, adjustable means for spacing said scraping members apart without interfering with the movement of the oscillating member.

5. A yarn cleaner as set forth in claim 3 in which said pivotally mounted member comprises a lever formed at one end with a notch for reeeiving the yarn having sides substantially normal to the direction of traversal of the yarn, and means for guiding the yarn into said notch.

HENRY E. GRIEMSMANN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

